Auxiliary melting pot



June 20, 1933. 1.. e. OLANDER AUXILIARY MELTING POT Filed Sept. 27, 1930 4 Sheets-Sheet 1 INVENTOR Lia/5 1711 17 flow/05; BY

ATTORNEYS J1me 1933. L. G. OLANDER AUXILIARY MELTING POT Filed Sept. 27, 1930 4 Sheets-Sheet 2 ATTORNEYS June 20, 1933. 1.. s. OLANDER AUXILIARY MELTING POT Filed Sept. 27, 1930 4 Sheets-Sheet 3 INVENTOR AEG/Yfl/FD 9': 04/711,051]? ATTOR N EYS.

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ATTORNEYS.

June 20, 1933. L. G. OLANDER AUXILIARY MELTING POT Filed Sept. 27 1930 Patented June 20, 1933 UNlTED STATES LEONARD G. OLANDER, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR TO THE IEONOMELT COMPANY, OF MINNEAPOLIS, MINNESOTA, A COBPOBATZON OF MINNESOTA AUXILIARY MEL'IZNG POT Application filed September 27, 1930. Serial No. 484,773.

This invention relates to a type casting machine, and particularly to the construction of the main melting pot and an auxiliary melting pot therefor. Machines of the linotype type have heretofore been provided with main and auxiliary melting pots, but the present invention is more particularly directed to the type of machine known as the monotype machine. Certain of such machines are provided with a main melting pot having a metal delivering nozzle co-operating with a fixed portion of the machine to deliver molten metal thereto. The main melting pot is mounted for swinging movement toward and from the machine or the machine frame, and 'for this purpose is mounted to swing about a vertical axis adjacent said frame. The pot must also be raised to bring said nozzle into delivering position. Such machines are frequently used for what are known as short runs, and small type casting jobs. With such runs, the melting pot must be lowered and raised and swung outwardly quite frequently by the operator. It is impractical to have any very large auxiliary melting pot used in connection with such a machine, as it is objectionably in the way, and the auxiliary melting pot must be located in position to give the best results and not interfere wlth the function of the main pot.

It is an object of the present invention, therefore, to provide a simple, efficient and easily operated machine of the type mentioned, provided with an auxiliary melting ot. p It is a further object of the invention to provide such a machine with a main and auxiliary melting pot, both of which are swingable as a unit about a vertical axis to swing the same away from the machine.

It is another object of the invention to provide a machine such as set forth in the above paragraph, in which the main and auxiliary melting pots may both be raised as a unit.

It is still another object of the invention to provide a type casting machine having a main melting pot with the front end adapted to be disposed in cooperative relationship with the machine and swingable toward and away from the machine, together with an auxiliary melting pot which is mounted over the main melting pot and at the rear end thereof and adapted to swing with the main melting pot.

It is still further an object of the invention to provide a type casting machine, a main melting pot, and an auxiliary melting pot with a common vent means for said pots.

It is still another object of the invention to provide a type casting machine having a frame, a bracket mounted for swinging movement toward and from said frame about a vertical axis, a main melting pot carried on said bracket, a second bracket carried by said bracket, an auxiliary melting pot supported on said second bracket, and additional means for securing said main and auxiliary melting pots together.

These and other objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying drawings, in

which like reference characters refer to similar parts throughout the several views and in which Fig. l is a plan view of a portion of the machine showing the main and auxiliary melting pots, the main pot being shown in a different position in dotted lines;

Fig. 2 is a view in side elevation of the machine with the main melting pot in operative position;

Fig. 3 is a view as seen from the left of Fig. 2 with the main melting pot swung to inoperative position; and

Fig. 4 is a view as seen from the right of Fig. 3.

Referring to the drawings, a type casting machine is shown, comprising a frame of which parts 10 are shown, said frame having a bracket 11 secured thereto having vertically spaced bearings 1166 in which is mounted the shaft or spindle 12, the lower portion of said bracket being shown as split and having portions connected by the headed bolt 13. The bracket 1% has a hub mounted on shaft 12 for swinging movement about said shaft, said shaft 12 having a projection extending through bearing 11a on which is secured a hand crank 15. Shaft 12 is threaded as shown at 12a for a portion of its length adjacent lower bearing 11a and the hub of bracket 11 is formed as a. nut adjacent its lower end cooperating with the screw portion 12a. Bracket 14 can thus swing about shaft 12 and can be raised vein tically by rotation of crank 15. Bracket 1% has a plate-like extension 1 10 at its end disposed some distance below the top of its hub portion, and a main melting pot 16 is mounted on this portion. Portion lela has projecting outwardly therefrom a handle 14?) adapted to be grasped by the operator for swinging pot l6 and bracket 1 1. The pot 16 as clearly shown in Fig. 1, is of oblong shape, being smaller atits front end or the end which is nearest the machine proper, the larger end of said pot being directed or disposed away from the machine and frame 10. The pot 16 has a discharge nozzle 17 adjacent its front end, which nozzle when the pot is in operative position, cooperates with another stationary portion of the machine to discharge the molten metal for a casting operation. The pot 16 also has therein a cylinder or chamber forming member 18 in which a plun er operates for forcing the molten metal from the pot through nozzle 17. This plunger operated in the operation of the machine by a pair of levers 19 shown as connected by a link 20, said levers being connected to a vertically moving rod 21 mounted in the frame of the machine. A red 22, connected to bracket 1 1 by a spring 23, is shown in Fig. 2, said parts operating in the forcing of the metal from pot 16. These portions of the machine form no part of the present invention, and need not be further considered. The plunger rod 24 has connected thereto a manually operable rod 25 having a handle 26 at its upper end for manual operation by the operator. This rod 25 and handle 26 are operated at various times in the operation of the machine. The melting pot 16 has a pair of burners 28 disposed beneath the same, to which gas is supplied for heating said pot through a flexible conduit or tube 29 shown as secured to a vertically extending pipe 30 depending from a gas governor 81 having a portion 31a extending down into the metal of pot 16. Said governor per se forms no part of the present invention, and may be of the type shown in the patent to Boker, No. 1,721,252, granted August 13, 1929. Said governor 31 is shown as having adjusting and indicating means 31?) thereon. Pipe 32 supplies gas to governor 31, said pipe 32 comprising a coupling 33 and being connected to a fitting 33a with which pipe 34 is connected. Pipe 34 has secured thereto a flexible tube 35 which extends to the cock 36 carried in a vertical pipe 37 which communicates through a suitable T with the main gas supply line 38 having a shutoff valv 39 therein.

A bracket 40 is secured to bracket 14: by a pair of bolts 11. Bracket =10 has a pair of elongated slots i005 therein providing for vertical adjustment of the bracket 40. An auxiliary melting pot designated generally 42 is carried on the top of the bracket 10 and secured thereto. Pot 4-2 as shown in Fig. 1 is generally square or rectangular in horizontal cross section and comprises a top member 120 having a flange surrounding the top of said pot. Said potalso comprises a shell 12b and an inner wall 120?. a layer of insulating material 420 being disposed between shell l b and the inner wall 42d. The pot proper or crucible comprises a all. 41-26. The main pot 16 has a vent passage extending vertically through a hub 16a and pot 42 has a. downwardly extending hub 12; resting on hub 16a. Pot has a passage 12g extending therethrongh, alined with the hubs 16c and 42f, and has secured thereto at its upper end an upwardly extending stack leading from the passage 42g, said stack 13 fitting around an annular hub or projection 16a on member 42a. A burner 11- is dis posed beneath pot t2 and is supplied with gas by a pipe extending to a gas governor --l-6 secured to the pot 12 by a bracket 17, said governor having a portion extending over and downwardly into the pot 12. Said governor %6 may be similar to the governor 31 and is also sh wn as provided with an adjusting and indicating means 4.6a. Governor -16 is supplied with by a pipe 48 to which is connected a flexible conduit 19 which extends to the fitting 33 already described. Pot i2 and particularly the inner portion 4-26 thereof has leading therefrom a trough 42?: adapted to discharge into the main pot 16 at the rear end thereof and at the outer side of the cylinder 18 and levers 19. Pot 420 has a valve seat 427' formed in the bottom thereof, with which co-operates a valve 50a carried at the bottom of the rod 50 extending vertically through pot l2 and having a nut 51 at its upper end resting on the top of the inner end of lever 52, said lever being pivoted in a small ln'ackot projecting from the top of member 42d by the headed and nutted bolt Lever 52 has a pair of resilient members 524 atits outer end formed to embrace a rod 54-, which rod threaded at its upper end to receive a nut 55 resting on top of the lever Collars 54a are secured to rod 54: below lever and engage the under side thereof. Rod 5 L extends downwardly into the rear end of the pot 16 and has secured thereto a float member 56. Rod 5 passes through and guided in a bracket 57 secured to the side of the pot 4-2. The rod 58 is slidable in vertically spaced brackets 59 secured to the side of the pot 4l-2, which rod is surrounded by a com pression coil spring 60 bearing at its upper end against a collar 61 secured to rod 58 so that said rod is elevated by said spring. Rod 58 has a lateral extension 58a thereon and has a handle 59 at its upper end. It will be seen, as shown in Fig. 4, that rod 58 can be scillated to swing portion 58a under the lever 52, elevate the outer end of said lever, and hold float in elevated and inoperative position. The pot i2 has a lid 4127c thereon pivoted about pivot 62, said lid being held down into place by a platespring 63 secured in place by pivot screw Lid 127s is laterally slidable to give access to the top of pot l2. Member 42a also has a small channel shaped braclitet- 64 secured thereto, having its sides projecting upwardly, on which rests the platelike mem ber 65 having an indication (not shown) on one side such as the word empty. Plate has a weighted portion 65a; at one side. and has projections at its other side pivoted to the -top of rod 66 extending down into portion 420 of pot l2 and carrying a float member 67. The pot 42 has a hub portion 42m disposed centrally of the passage 427i which terminates some distance below the top of the pot and is bored to receive a rod 68 extending down through passage 127i and hubs and 16a into the vent passage of pot 16. Said rod has pivoted to its lower end apair of oppositely extending arms 69 having engaging depending portions 69a which portions engage beneath shoulders or ledges 16?) at the sides of the vent passage of pot 16. llod 68 is threaded at its upper end and has a nut resting on top of a hub in a pot l2 so that when rod 68 elevated by rotation of said nut arms 69 will be brought into substantially horizontal positions with the portion 69a in engagement. Arms 69 will engage said shoulders or ledges 16?) and when nut 70 tightened, pot 12 will be drawn down tightly and secured to pot 16.

In operation, when the type are to be cast, the melting pot 16 is swung inwardly to the position shown in Figs. 1, 2 and 4. The operator swings the pot by taking hold of the handle 1 1]). After the pot 16 is swung inward to position, the operator rotates crank handle 15, turning screw 12a and elevating bracket 14 and pot 16 so that the nozzle 17 is brought into operative position. The machine can then be operated to cast when desired, the metal being forced through nozzle 17 by operation of the phmger in cylinder 18 operated by the levers 19. hen it is necessary to again move the pot to inoperative position, the operator again operates the crank 15 tnus lowering the pot 16 and bracket 14 and the pot is then swung outwardly with the bracket about the axis of shaft 12. By the present construction or" main and auxiliary melting pots and the arrangement of bracket 14, it will be seen that the auxiliary pot 42 is swung outwardly with the main pot and is raised and lowered therewith. The auxiliary melting pot is at all times maintained in proper relation to the main pot and the gas supply lines and gas governors are also moved with the main pot. The flexible conduit 35 accommodates this movement. lVith the present construe-- tion, therefore, the operator is put to no additional operation in order to get both pots out of the way between the runs made on the machine. The auxiliary pot is disposed at the outer end of the main pot and does not interfere in any way with the operations of levers l9, and yet can deliver molten metal through the trough 4.25 to the main pot. This delivery of metal is automatically cont-rolled by the float 56. Then the level oi molten metal gets low in the main pot, tloat 56 will descend, thus lowering he outer end of lever 52, raising the inner end thereof, lifting the rod 50 and thus opening valve 50a. This will permit metal to tlow out through trough 412i into the main pot to replenish the metal therein. Vfhen the desired level is attained in pot 16, float 56 will raise the outer end of lever 52, thus lowering the inner end thereof and moving valve rod 50 down to close valve 50a and shut oil the supply of metal from the auxiliary pot. The regulating mechanism for the metal, including the rod 54 and float 56 can be held out of operation by oscillating the rod 58 by handle 59 and moving the projection 58a under the outer end of lever 52. Spring 60 then lifts the outer end 01 lever 52 and holds the float 56 elevated so that valve 50a will remain closed. The main pot is heated by the burners 28 and the auxiliary pot by the burners 44. Both burners are automatically regulated to give the desired temperature, by the governors 31 and ll respectively. The plate 65 rocks on the sides of the channel bracket- 6& and when the level of metal in pot 42 hecomes sufiieiently low, it drops below the float 67 and the weight of the float pulls on rod 66, rocking plate 65 to its vertical position as shown in Fig. 3, so that the word empty is displayed thereon. When the auxiliary pot is replenished, float 67 is raised and the weighted portion 65a causes the plate 65 to rock on bracket 64: to a horizontal position so that the indication empty is not displayed to the operator. The pot 42 as stated is so disposed that it does not interfere with any of the operations of the machine. The operator some times operates the plunger 25 by means of the handle 26. The rod 25 is extended so that handle 26 is disposed above pot l2 and can thus be readily manipulated by the op erator. It will be seen that the vent passage from pot 16 passes through the hub 16aand this passage is continued in the passage 42h. Stack 43 therefore, which is secured to the top of pot 42, forms a vent stack for both pots.

From the above description it is seen that applicant has provided a simple and much improved type setting machine. An auxiliary melting pot is provided, which is swingable about a vertical axis with and is also movable vertically with the main pot. The auxiliary melting pot is disposed where it is not in the way and yet can function efiiciently. Both pots are conveniently equipped with the gas governors for determining the temperatureto which they are heated. The operator can thus manipulate bot-l1 pots with a single means and the advantages of the auxiliary melting pot are secured without adding any labor to the operation of the machine. The device has been amply demonstrated in actual practice and found to be very successful and efficient.

It will, of course, be understood that Various changes may be made in the form, details, arrangement and proportions of the parts without departing from the scope of applicants invention, which, generally stated, consists in a device capable of carrying out the objects above set forth, in the novel parts and combinations of parts disclosed and defined in the appended claims.

\Vhat is claimed is 1. A type casting machine having in combination, a frame, a bracket mounted on said frame for swinging movement about a vertical axis toward and from said frame, a main melting pot carried by said bracket, and an auxiliary melting pot carried by said bracket for swinging movement therewith, said auxiliary pot being mounted at the end. of said main melting pot remote from said frame when said main melting pot is in op erative posit-ion.

2. A type casting machine having in combination, a frame, a bracket mounted on said frame for swinging movement about a vertical axis toward and from said frame, means for raising said bracket vertically, and main and auxiliary melting pots carried by said bracket and movable therewith about said axis and vertically.

3. A type casting machine having in combination, a frame, a main melting pot having a metal delivery means movable vertically with said pot to delivering posit-ion and located adjacent one end of said pot, and an auxiliary melting pot adjacent the other end of said pot arranged to deliver metal into said main pot.

4. A type casting machine having in combination, a frame. a bracket mounted on said frame to swing about a vertical axis toward and from said frame, a main melting pot 'arried on said bracket and swingable with said bracket through angle of substantially 90 degrees, an auxiliary melting pot mounted over said main pot and secured rigidly thereto, the same being disposed at the end of said pot remote from said frame, and a common means for swinging said main and auxiliary pots about said axis.

5. A type casting machine having in combination, a main melting pot, an auxiliary melting pot having fixed relation to said main melting pot and arranged to deliver metal thereinto, and manually actuated means for swinging said melting pots about a vertical axis and for moving said pots vertically to and from an operative position.

6. A type casting machine having in combination, a main melting pot, means at the front of said pot for discharging metal to said machine, an. auxiliary melting pot adjacent the other end of said pot and arranged to deliver molten metal to said main pot, an oscillating member on which said pots are mounted, and a single means for swinging said member and moving both of said pots.

7. A type casting machine having in combination, a frame, a main melting pot mounted for swinging movement toward and away from said frame, means extending into said pot for forcing metal therefrom including an upstanding rod having a handle theron, an auxiliary melting pot mounted to swing with said main pot and to discharge molten metal thereinto, said handle being disposed above the top of said auxiliary pot.

8. A type casting machine having in combination, a frame, a main melting pot mounted for swinging movement toward and from said frame, means for forcing molten metal from said pot, including a plunger, a lever for operating said plunger, said lever being swingable with said pot and about a member fixed on said frame, and an auxiliary melting pot mounted above said main melting pot for swinging movement therewith and at the rear side of said lever.

9. A type casting machine having in combination, a main melting pot having a vent passage leading upward therefrom, an auxiliary melting pot mounted on said main pot and surrounding said passage, and avent conduit leading upward from said auxiliary pot forming a vent passage for both pots, said conduit being vertically alined with said passage.

10. A type cast-ing machine having in combination, a bracket mounted on said frame for swinging movement about a vertical axis, a main melting pot carried on said bracket, a second bracket secured to said bracket, and an auxiliary melting pot supported on said second bracket to be swingable with said first mentioned bracket.

11. The structure set forth in claim 10,

auxiliary melting pot mounted over said main pot and having a passage extending Vertically therethrough alined with said first mentioned passage, and means extending through said passage and said auxiliary pot and secured to said main pot for holding said auxiliary pot in position.

13. A type casting machine having in combination, a main melting pot swingable toward and from said machine about a vertical axis, and an auxiliary melting pot mounted over said main melting pot movable with said main melting pot about said axis, said auxiliary melting pot being arranged to deliver metal to said main melting pot, and manual means for swinging said main melting pot and said auxiliary melting pot to and from operative position.

14:. A type casting machine having in combination, a frame, a bracket mounted thereon for swinging movement about a vertical axis, a main melting pot, an auxiliary melting pot mounted on said bracket and arranged to deliver metal to said main melting pot, and manual means for swinging said bracket and auxiliary pot, to and from operative position.

15. A type casting machine having in combination, a main melting pot and an auxiliary melting pot arranged to deliver molten metal thereinto, and means for swinging both pots about a vertical axis and for moving said pots vertically to and from an operative position.

16. A type casting machine having in combination, a main melting pot swingable toward and from said machine about a vertical axis, and an auxiliary melting pot arranged to deliver molten metal into said main melting pot, said auxiliary melting pot also being swingable toward and from said machine upon a vertical axis.

LEONARD G. OLANDER. 

